Makura Maxi is a teenager who attends Akari Academy. A boy who is aware he’s not good at speaking. He’s a friend of Shirakawa Kaoru but is convinced that Kaoru is only nice to him out of sympathy. That’s just his nature.

Maxi received a notice from a thief, saying a certain painting was to be stolen. He consulted his friend Kaoru about the notice, because the painting was originally owned by the Shirakawa family. The two later investigated Yonezaka Noa's gallery, where they met a mysterious girl named Yonezaka Kurumi who claims to be the daughter of the Yonezaka house.